Do you know what the working principle of an axial flow pump is? Today, the editor of Best Axial flow pump for locomotive will take you to a brief understanding.
Suppose the wing is suspended in the fluid, and when the fluid flows at a certain speed, negative pressure occurs on the wing surface and positive pressure on the wing back. the inclination angle) and the magnitude of the fluid velocity.

If the fluid does not move and the wing moves in the fluid at the same speed, the back of the wing and the surface of the airfoil are subject to the same positive and negative pressure as before, that is, the airfoil (above the wing) is negative pressure and the back of the wing is positive pressure . The wing will gain lift under this pressure.
If the wing-shaped blade is fixed on the rotating shaft to form a propeller and cannot move in the axial direction, when the rotating shaft rotates at a high speed, the airfoil (underside of the propeller) has a suction effect due to negative pressure, and the back of the wing has a suction effect. Due to the positive pressure, there is a drainage effect, so a suction and a row cause the flow of liquid (or gas). This is how an axial flow pump works.
The above is the introduction of Best Axial flow pump for locomotive: a brief introduction to the working principle of axial flow pump.